To have the Republican opponent ahead or even at par with BOTH the major Democratic candidates in swing states, in national polls, and even in blue states like PA and MI is a very troubling sign for Democrats. Especially after 8 years of GOP.
If Obama supporters are serious about having Barack become president, they should encourage him to run for governor of IL in 2012. Come back to us in 2016 when he actually has a resume to run on.
But then again, since governors for the most part tend to be rational, logical "real-politikers", I bet 4 years in any exectutive position would transform Obama from a diehard liberal into a moderate-to-conservative Democrat, once he sees firsthand the failure of tax-and-spend liberalism in governance. And hence, he would be dismissed as "too conservative" by Dem primary voters...
...and hence the cycle in choosing bad candidates with no chance in winning national elections repeats itself all over again.